Job Set for 14 Mount Points - 46 exist

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Job Set for 14 Mount Points - 46 exist

Veeam Logoby Louharle » Wed Jan 19, 2011 3:32 pm

Hello, trying to figure out why Veeam is not cleaning up after itself - I assume that if you set it for 14 mount points to keep on disk, at the 15th one it will purge the oldest -correct? I have it set for 14 and there are 46 (currently) under a job.. Thoughts?

Thanks,

Lou Harle
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Re: Job Set for 14 Mount Points - 46 exist

Veeam Logoby Alexey D. » Wed Jan 19, 2011 3:51 pm

Hello Louis,

Which are your settings for backup mode and for transform? Which files and with which extensions are you seeing in the target folder?
It may be a normal behavior depending on your settings.
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Re: Job Set for 14 Mount Points - 46 exist

Veeam Logoby Louharle » Wed Jan 19, 2011 3:57 pm

1 VBK and 45 VIB's -

Incremental - enable synthetic fulls (forever-incremental)
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Re: Job Set for 14 Mount Points - 46 exist

Veeam Logoby tsightler » Wed Jan 19, 2011 4:46 pm

How old is your VBK? Seems like the synthetic fulls are not running. When do you have them scheduled to run? How often is the job running?
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Re: Job Set for 14 Mount Points - 46 exist

Veeam Logoby Louharle » Wed Jan 19, 2011 4:56 pm

That i believe was the problem - wasn't ever doing an Active Full.... Set it to run tonight and will monitor, does that sound correct?
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Re: Job Set for 14 Mount Points - 46 exist

Veeam Logoby alexfeig1 » Wed Jan 19, 2011 5:50 pm

I opened a ticket about this one myself. It turns out that if the backup is failing, it will not honor retention points until it starts to succeed.
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Re: Job Set for 14 Mount Points - 46 exist

Veeam Logoby Louharle » Wed Jan 19, 2011 6:50 pm

Ok, still not cleaning up retention points... now I have a brand new VBK but still 45 *.vib's - anyone??
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Re: Job Set for 14 Mount Points - 46 exist

Veeam Logoby tsightler » Wed Jan 19, 2011 8:57 pm 1 person likes this post

Logically your requirement to keep 14 restore points can't be met until there are at least 14 more restore points from the last VBK.

In other words, you have a full backup, then 46 incrementals, then a full backup. If Veeam deletes the first full backup, and 33 incrementals, you'll be left with 13 incrementals and a full backup, except those 13 incrementals will be worthless since the full backup on which they were based would be deleted. Setting the number of retention points for incremental backups sets the minimum number that will be retained. The maximum number might vary based on the interval that you run full backups (either active or synthetic).

This has been explained in another thread, but here it is again for simplicity. Let's say you run backups every day, and you want to keep 14 restore points, and you run a full every week. After one week you get this:

Week 1: F...I...I...I...I...I...I

So that's one full, and 6 incrementals, for a total of 7 restore points, now the second week:

Week 1: F...I...I...I...I...I...I
Week 2: F...I...I...I...I...I...I

So that's two fulls and 12 incrementals for a total of 14 restore points, now it's day 15, and you run another full and end up with this:

Week 1: F...I...I...I...I...I...I
Week 2: F...I...I...I...I...I...I
Week 3: F

You've told veeam to keep 14 restore points, but it can't delete the full backup from week one, because that would invalidate all of the incremental backups from week 1 and leave you with the following:

Week 2: F...I...I...I...I...I...I
Week 3: F

That's only 8 restore points, and you've told Veeam to keep 14. Veeam will not delete the first weeks backups until the last backup of Week 3 because at that point you'd have 21 backups:

Week 1: F...I...I...I...I...I...I
Week 2: F...I...I...I...I...I...I
Week 3: F...I...I...I...I...I...I

Thus if Veeam deletes Week 1 I get:

Week 2: F...I...I...I...I...I...I
Week 3: F...I...I...I...I...I...I

14 backups, which meets the requirement.

If you want Veeam to keep the exact number of restore points you can use reverse incrementals since in that case the oldest backup can always be deleted, otherwise, it's no different than tape backup retention has been forever, the ratio of full to incremental backups will determine the number of backups that have to be kept to meet a minimum retention period.
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Re: Job Set for 14 Mount Points - 46 exist

Veeam Logoby Alexey D. » Thu Jan 20, 2011 9:19 am

Thanks for good explanation, Tom.

Louis, what is your schedule for backup?
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Re: Job Set for 14 Mount Points - 46 exist

Veeam Logoby Gostev » Thu Jan 20, 2011 3:23 pm

Here is the existing topic with another possible explanation for this issue > "Restore points to keep" being ignored?
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[MERGED] Restore Points & Deleted VM's Retention

Veeam Logoby flavor4real » Thu Aug 25, 2011 12:57 pm

I have search this subject for a while and I guess that my post will be merged with some other or removed. I still have to ask this one here, just to see if I understood that right.

A Job runs Mon - Fri, 1 time a day, full synthetic on Friday.
Restore Points to keep on disk is set to 10
Delete VM's ret. period is set to 10

that would mean that I have 2 weeks of backups. did I understood right?
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[MERGED] Re: Deleted VMs Retention Period

Veeam Logoby neo_italy » Thu Sep 01, 2011 12:54 pm

Hello,
to save disk space on backup repository, we have configured multiple VMs with a maximum of 30 restore points. Now, because the repository filesystem is full, we are checking and there are more restore points than the maximum defined.

Someone can explan why?

Many thanks
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Re: Job Set for 14 Mount Points - 46 exist

Veeam Logoby pparks1 » Thu Sep 01, 2011 8:17 pm 1 person likes this post

neo_italy,

A lot will depend upon whether you are doing incremental backups or reverse incrementals. With reverse incrementals, you have 1 .VBK file that gets appended to daily, and a .VRB is created for each previous point in time. So, with 30 day retention, you would have 30 files, and when the 31st file gets created, the oldest .VRB is deleted.

If you use incremental backups, its far more complex. Image if you will, that you do backups on weekdays only (M-F), and you do a synthetic full backup on Friday. Lets say that you want to keep 10 restore points.

1st Monday: Full backup
1st Tuesday: Incremental
1st Wed: Incremental
1st Thurs: Incremental
1st Fri: Incremental first, then sythentic runs, leaving new full backup (and this particular incremental is deleted).

So, after the 1st week: You have 2 full backups (1st monday and 1st friday), with 3 incrementals (.vib's on Tuesday-Wednesday-Thursday). And you have a total of 5 more points.

2nd Monday: Incremental
2nd Tuesday: incremental
2nd Wed: Incremental
2nd Thurs: incremental
2nd Friday: Incremental first, then sythentic runs, leaving new full backup (and this particular incremental is deleted).

So, after the 2nd week: You now have 3 full backups (1st Monday, 1st Friday, 2nd Friday) and you have 7 incrementals (1st Tuesday, 1st wed, 1st thurs, 2nd mon, 2nd tues, 2nd wed and 2nd thursday). Overall you now have 10 restore points.

3rd monday: Incremental runs. (Thus you have hit restore point number 11). So, now the system can delelete that 1st restore point, right? Nope. That first restore point (from 1st Monday...is a full. The incrementals on 1st Tues, 1st Wed, and 1st Thursday NEED the 1st Monday full to be of any use. Therefore the system cannot delete the 1st Monday yet..as that would also delete 1st Tues, 1st Wed, and 1st Thursday. Thus leaving only 7 restore points (1st Friday, 2nd mon, 2nd tues, 2nd wed, 2nd thurs, 2nd friday, 3rd monday).

3rd tuesday: incremental runs
3rd wednesday: incremental runs
3rd thursday: incremental runs
3rd friday: Incremental first, then sythentic runs, leaving new full backup (and this particular incremental is deleted).

It's at this point, with 4 full backups, and 11 incrementals..comprising 15 retore points that anything can be deleted. After the 3rd friday backup, it can now delete 1st Monday full and 1st tues Incremental, 1st wednesday incremental and 1st thursday incremental. Once those delete, you end up with 10 restore points on disk.

Be aware, when you run your synthetic fulls you must schedule them to run on a day when you run backups or they never happen. For example, in the above scenario, if you scheduled backups to occur on M-F..but checked the box for a Saturday synthetic full, since the job won't launch on Saturday, the synethetic fulls never get created. Thus, you end up with tons of incrementals...which can never clear out as you cannot delete the very fist Full..which all subsequent incrementals depend upon.
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more than 5 restore points

Veeam Logoby homermg » Mon Sep 05, 2011 1:52 pm

[merged]

Hi all,

I'm just wondering about the restorepoints.
I have enabled the "Restore Points to keep = 5". But i have now allready 17 restorepoints and 4 full backups.
I only need one week, i mean Monday= Full and the rest of the week differential.
Can anybody help me to setup it right way?
thanks!
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Re: Job Set for 14 Mount Points - 46 exist

Veeam Logoby pparks1 » Wed Oct 05, 2011 10:58 pm 1 person likes this post

homermg,

What type of backup are you doing? Based on what you have said above it sounds like "Incremental" if you multiple full backups. The opposite approach is reverse incrementals where you only have 1 full backup (.vbk) and X number of restore points (.vrb's)

So, lets say you want to keep 1 week...or 5 backup files with an incremental approach and you only backup on weekdays (Mon-Fri)

So, 1st Monday you take a full backup.
1st Tuesday..you take an incremental backup
1st Wednesday..you take another incremental
1st Thursday..you take another incremental
1st Friday..you take another incremental

So, after 1st week, you have 5 files. 1 full backup and 4 incrementals

So, the following Monday you want to schedule a "synthetic full backup". So, on 2nd Monday...you would take a new incremental...and then it would combine the previous full from 1st monday, with all other incrementals and make a new full on the 2nd Monday...and thus delete the 2nd Monday incremental

So, at the end of the day on the 2nd Monday..you now have 6 files. Full backup from 1st Monday...incrementals on 1st Tues, 1st Wed, 1st Thur, 1st Friday, and full backup on 2nd Monday.

At this point, even though you now have 6 files (and thus 1 more than you want), Veeam cannot auto delete the oldest file...because that's the full backup from the 1st Monday...and without the first Monday full...the incrementals from 1st Tues, 1st Wed, 1st Thurs, and 1st Thurs would be useless.

Thus, on 2nd Tuesday you will get Incremental
on 2nd Wedness you will get Incremental
on 2nd Thursday you get incremental
on 2nd Friday you get incremental.

So, we now have 10 files total 2 full backups (1st Monday and 2nd Monday) and 8 incrementals for Tues-Fri of each of fist 2 weeks. At the end of Friday, you can actually delete that 1st week....as you would be left with 5 restore points (2nd Fri, 2nd Thurs, 2nd Wed, 2nd Tues, and full backup from 2nd Monday). So you would be down to 5 files now.

After the 3rd Monday Synthetic full gets created....and now you will be up to 7 files. And you will add files again until the next Friday.


Another thing: Lets say that you have a VM that you backup during the 1st 2 days. Then on the third day you remove the VM and you remove the VM selection from the job. When the job next runs, since that VM is no longer present..and not getting added to the backup routine....the system is unable to remove any previous backups as it wouldn't have more than 5 backups for this removed VM. This is where the deleted VM's retention period comes in. If you have this set to default of 14 days...you would have to go at least 14 days until the system will automatically any files containing that now missing VM. A way around this is to find the VM listed in the backups, and choose to delete it. Once it's out of the backup, the next time the job runs, the system will clean up after itself.
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